| 1 | # This file is included by the global makefile so that you can add your own |
| 2 | # architecture-specific flags and dependencies. Remember to do have actions |
| 3 | # for "archclean" and "archdep" for cleaning up and making dependencies for |
| 4 | # this architecture. |
| 5 | # |
| 6 | # This file is subject to the terms and conditions of the GNU General Public |
| 7 | # License. See the file "COPYING" in the main directory of this archive |
| 8 | # for more details. |
| 9 | # |
| 10 | # Copyright (C) 1994 by Linus Torvalds |
| 11 | # Changes for PPC by Gary Thomas |
| 12 | # Rewritten by Cort Dougan and Paul Mackerras |
| 13 | # |
| 14 | |
| 15 | HAS_BIARCH := $(call cc-option-yn, -m32) |
| 16 | |
| 17 | # Set default 32 bits cross compilers for vdso and boot wrapper |
| 18 | CROSS32_COMPILE ?= |
| 19 | |
| 20 | CROSS32CC := $(CROSS32_COMPILE)gcc |
| 21 | CROSS32AR := $(CROSS32_COMPILE)ar |
| 22 | |
| 23 | ifeq ($(HAS_BIARCH),y) |
| 24 | ifeq ($(CROSS32_COMPILE),) |
| 25 | CROSS32CC := $(CC) -m32 |
| 26 | CROSS32AR := GNUTARGET=elf32-powerpc $(AR) |
| 27 | endif |
| 28 | endif |
| 29 | |
| 30 | export CROSS32CC CROSS32AR |
| 31 | |
| 32 | ifeq ($(CROSS_COMPILE),) |
| 33 | KBUILD_DEFCONFIG := $(shell uname -m)_defconfig |
| 34 | else |
| 35 | KBUILD_DEFCONFIG := ppc64_defconfig |
| 36 | endif |
| 37 | |
| 38 | ifeq ($(CONFIG_PPC64),y) |
| 39 | new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi) |
| 40 | |
| 41 | ifeq ($(new_nm),y) |
| 42 | NM := $(NM) --synthetic |
| 43 | endif |
| 44 | endif |
| 45 | |
| 46 | ifeq ($(CONFIG_PPC64),y) |
| 47 | ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) |
| 48 | OLDARCH := ppc64le |
| 49 | else |
| 50 | OLDARCH := ppc64 |
| 51 | endif |
| 52 | else |
| 53 | ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) |
| 54 | OLDARCH := ppcle |
| 55 | else |
| 56 | OLDARCH := ppc |
| 57 | endif |
| 58 | endif |
| 59 | |
| 60 | # It seems there are times we use this Makefile without |
| 61 | # including the config file, but this replicates the old behaviour |
| 62 | ifeq ($(CONFIG_WORD_SIZE),) |
| 63 | CONFIG_WORD_SIZE := 32 |
| 64 | endif |
| 65 | |
| 66 | UTS_MACHINE := $(OLDARCH) |
| 67 | |
| 68 | ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) |
| 69 | override CC += -mlittle-endian -mno-strict-align |
| 70 | override AS += -mlittle-endian |
| 71 | override LD += -EL |
| 72 | override CROSS32CC += -mlittle-endian |
| 73 | override CROSS32AS += -mlittle-endian |
| 74 | LDEMULATION := lppc |
| 75 | GNUTARGET := powerpcle |
| 76 | MULTIPLEWORD := -mno-multiple |
| 77 | KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-save-toc-indirect) |
| 78 | else |
| 79 | ifeq ($(call cc-option-yn,-mbig-endian),y) |
| 80 | override CC += -mbig-endian |
| 81 | override AS += -mbig-endian |
| 82 | endif |
| 83 | override LD += -EB |
| 84 | LDEMULATION := ppc |
| 85 | GNUTARGET := powerpc |
| 86 | MULTIPLEWORD := -mmultiple |
| 87 | endif |
| 88 | |
| 89 | ifeq ($(HAS_BIARCH),y) |
| 90 | override AS += -a$(CONFIG_WORD_SIZE) |
| 91 | override LD += -m elf$(CONFIG_WORD_SIZE)$(LDEMULATION) |
| 92 | override CC += -m$(CONFIG_WORD_SIZE) |
| 93 | override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-$(GNUTARGET) $(AR) |
| 94 | endif |
| 95 | |
| 96 | LDFLAGS_vmlinux-y := -Bstatic |
| 97 | LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie |
| 98 | LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) |
| 99 | |
| 100 | ifeq ($(CONFIG_PPC64),y) |
| 101 | ifeq ($(call cc-option-yn,-mcmodel=medium),y) |
| 102 | # -mcmodel=medium breaks modules because it uses 32bit offsets from |
| 103 | # the TOC pointer to create pointers where possible. Pointers into the |
| 104 | # percpu data area are created by this method. |
| 105 | # |
| 106 | # The kernel module loader relocates the percpu data section from the |
| 107 | # original location (starting with 0xd...) to somewhere in the base |
| 108 | # kernel percpu data space (starting with 0xc...). We need a full |
| 109 | # 64bit relocation for this to work, hence -mcmodel=large. |
| 110 | KBUILD_CFLAGS_MODULE += -mcmodel=large |
| 111 | else |
| 112 | export NO_MINIMAL_TOC := -mno-minimal-toc |
| 113 | endif |
| 114 | endif |
| 115 | |
| 116 | CFLAGS-$(CONFIG_PPC64) := -mtraceback=no |
| 117 | ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) |
| 118 | CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,-mcall-aixdesc) |
| 119 | AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2) |
| 120 | else |
| 121 | CFLAGS-$(CONFIG_PPC64) += -mcall-aixdesc |
| 122 | endif |
| 123 | CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,-mminimal-toc) |
| 124 | CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions) |
| 125 | CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 $(MULTIPLEWORD) |
| 126 | |
| 127 | ifeq ($(CONFIG_PPC_BOOK3S_64),y) |
| 128 | CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,-mtune=power4) |
| 129 | else |
| 130 | CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64 |
| 131 | endif |
| 132 | |
| 133 | CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell) |
| 134 | CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4) |
| 135 | CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5) |
| 136 | CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6) |
| 137 | CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7) |
| 138 | CFLAGS-$(CONFIG_POWER8_CPU) += $(call cc-option,-mcpu=power8) |
| 139 | |
| 140 | # Altivec option not allowed with e500mc64 in GCC. |
| 141 | ifeq ($(CONFIG_ALTIVEC),y) |
| 142 | E5500_CPU := -mcpu=powerpc64 |
| 143 | else |
| 144 | E5500_CPU := $(call cc-option,-mcpu=e500mc64,-mcpu=powerpc64) |
| 145 | endif |
| 146 | CFLAGS-$(CONFIG_E5500_CPU) += $(E5500_CPU) |
| 147 | CFLAGS-$(CONFIG_E6500_CPU) += $(call cc-option,-mcpu=e6500,$(E5500_CPU)) |
| 148 | |
| 149 | ifeq ($(CONFIG_PPC32),y) |
| 150 | ifeq ($(CONFIG_PPC_E500MC),y) |
| 151 | CFLAGS-y += $(call cc-option,-mcpu=e500mc,-mcpu=powerpc) |
| 152 | else |
| 153 | CFLAGS-$(CONFIG_E500) += $(call cc-option,-mcpu=8540 -msoft-float,-mcpu=powerpc) |
| 154 | endif |
| 155 | endif |
| 156 | |
| 157 | CFLAGS-$(CONFIG_TUNE_CELL) += $(call cc-option,-mtune=cell) |
| 158 | |
| 159 | asinstr := $(call as-instr,lis 9$(comma)foo@high,-DHAVE_AS_ATHIGH=1) |
| 160 | |
| 161 | KBUILD_CPPFLAGS += -Iarch/$(ARCH) $(asinstr) |
| 162 | KBUILD_AFLAGS += -Iarch/$(ARCH) $(AFLAGS-y) |
| 163 | KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y) |
| 164 | CPP = $(CC) -E $(KBUILD_CFLAGS) |
| 165 | |
| 166 | CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__ |
| 167 | |
| 168 | KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o |
| 169 | |
| 170 | ifeq ($(CONFIG_476FPE_ERR46),y) |
| 171 | KBUILD_LDFLAGS_MODULE += --ppc476-workaround \ |
| 172 | -T $(srctree)/arch/powerpc/platforms/44x/ppc476_modules.lds |
| 173 | endif |
| 174 | |
| 175 | # No AltiVec or VSX instructions when building kernel |
| 176 | KBUILD_CFLAGS += $(call cc-option,-mno-altivec) |
| 177 | KBUILD_CFLAGS += $(call cc-option,-mno-vsx) |
| 178 | |
| 179 | # No SPE instruction when building kernel |
| 180 | # (We use all available options to help semi-broken compilers) |
| 181 | KBUILD_CFLAGS += $(call cc-option,-mno-spe) |
| 182 | KBUILD_CFLAGS += $(call cc-option,-mspe=no) |
| 183 | |
| 184 | # Enable unit-at-a-time mode when possible. It shrinks the |
| 185 | # kernel considerably. |
| 186 | KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) |
| 187 | |
| 188 | # FIXME: the module load should be taught about the additional relocs |
| 189 | # generated by this. |
| 190 | # revert to pre-gcc-4.4 behaviour of .eh_frame |
| 191 | KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) |
| 192 | |
| 193 | # Never use string load/store instructions as they are |
| 194 | # often slow when they are implemented at all |
| 195 | KBUILD_CFLAGS += -mno-string |
| 196 | |
| 197 | ifeq ($(CONFIG_6xx),y) |
| 198 | KBUILD_CFLAGS += -mcpu=powerpc |
| 199 | endif |
| 200 | |
| 201 | # Work around a gcc code-gen bug with -fno-omit-frame-pointer. |
| 202 | ifeq ($(CONFIG_FUNCTION_TRACER),y) |
| 203 | KBUILD_CFLAGS += -mno-sched-epilog |
| 204 | endif |
| 205 | |
| 206 | cpu-as-$(CONFIG_4xx) += -Wa,-m405 |
| 207 | cpu-as-$(CONFIG_ALTIVEC) += -Wa,-maltivec |
| 208 | cpu-as-$(CONFIG_E200) += -Wa,-me200 |
| 209 | |
| 210 | KBUILD_AFLAGS += $(cpu-as-y) |
| 211 | KBUILD_CFLAGS += $(cpu-as-y) |
| 212 | |
| 213 | head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o |
| 214 | head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o |
| 215 | head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o |
| 216 | head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o |
| 217 | head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o |
| 218 | |
| 219 | head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o |
| 220 | head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o |
| 221 | head-$(CONFIG_ALTIVEC) += arch/powerpc/kernel/vector.o |
| 222 | head-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += arch/powerpc/kernel/prom_init.o |
| 223 | |
| 224 | core-y += arch/powerpc/kernel/ \ |
| 225 | arch/powerpc/mm/ \ |
| 226 | arch/powerpc/lib/ \ |
| 227 | arch/powerpc/sysdev/ \ |
| 228 | arch/powerpc/platforms/ \ |
| 229 | arch/powerpc/math-emu/ \ |
| 230 | arch/powerpc/crypto/ \ |
| 231 | arch/powerpc/net/ |
| 232 | core-$(CONFIG_XMON) += arch/powerpc/xmon/ |
| 233 | core-$(CONFIG_KVM) += arch/powerpc/kvm/ |
| 234 | core-$(CONFIG_PERF_EVENTS) += arch/powerpc/perf/ |
| 235 | |
| 236 | drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ |
| 237 | |
| 238 | # Default to zImage, override when needed |
| 239 | all: zImage |
| 240 | |
| 241 | # With make 3.82 we cannot mix normal and wildcard targets |
| 242 | BOOT_TARGETS1 := zImage zImage.initrd uImage |
| 243 | BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.% |
| 244 | |
| 245 | PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2) |
| 246 | |
| 247 | boot := arch/$(ARCH)/boot |
| 248 | |
| 249 | ifeq ($(CONFIG_RELOCATABLE),y) |
| 250 | quiet_cmd_relocs_check = CALL $< |
| 251 | cmd_relocs_check = perl $< "$(OBJDUMP)" "$(obj)/vmlinux" |
| 252 | |
| 253 | PHONY += relocs_check |
| 254 | relocs_check: arch/powerpc/relocs_check.pl vmlinux |
| 255 | $(call cmd,relocs_check) |
| 256 | |
| 257 | zImage: relocs_check |
| 258 | endif |
| 259 | |
| 260 | $(BOOT_TARGETS1): vmlinux |
| 261 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) |
| 262 | $(BOOT_TARGETS2): vmlinux |
| 263 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) |
| 264 | |
| 265 | |
| 266 | bootwrapper_install: |
| 267 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) |
| 268 | |
| 269 | %.dtb: scripts |
| 270 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) |
| 271 | |
| 272 | define archhelp |
| 273 | @echo '* zImage - Build default images selected by kernel config' |
| 274 | @echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' |
| 275 | @echo ' uImage - U-Boot native image format' |
| 276 | @echo ' cuImage.<dt> - Backwards compatible U-Boot image for older' |
| 277 | @echo ' versions which do not support device trees' |
| 278 | @echo ' dtbImage.<dt> - zImage with an embedded device tree blob' |
| 279 | @echo ' simpleImage.<dt> - Firmware independent image.' |
| 280 | @echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)' |
| 281 | @echo ' install - Install kernel using' |
| 282 | @echo ' (your) ~/bin/$(INSTALLKERNEL) or' |
| 283 | @echo ' (distribution) /sbin/$(INSTALLKERNEL) or' |
| 284 | @echo ' install to $$(INSTALL_PATH) and run lilo' |
| 285 | @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs' |
| 286 | @echo '' |
| 287 | @echo ' Targets with <dt> embed a device tree blob inside the image' |
| 288 | @echo ' These targets support board with firmware that does not' |
| 289 | @echo ' support passing a device tree directly. Replace <dt> with the' |
| 290 | @echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory' |
| 291 | @echo ' (minus the .dts extension).' |
| 292 | endef |
| 293 | |
| 294 | install: |
| 295 | $(Q)$(MAKE) $(build)=$(boot) install |
| 296 | |
| 297 | vdso_install: |
| 298 | ifeq ($(CONFIG_PPC64),y) |
| 299 | $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ |
| 300 | endif |
| 301 | $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ |
| 302 | |
| 303 | archclean: |
| 304 | $(Q)$(MAKE) $(clean)=$(boot) |
| 305 | |
| 306 | archprepare: checkbin |
| 307 | |
| 308 | # Use the file '.tmp_gas_check' for binutils tests, as gas won't output |
| 309 | # to stdout and these checks are run even on install targets. |
| 310 | TOUT := .tmp_gas_check |
| 311 | |
| 312 | # Check gcc and binutils versions: |
| 313 | # - gcc-3.4 and binutils-2.14 are a fatal combination |
| 314 | # - Require gcc 4.0 or above on 64-bit |
| 315 | # - gcc-4.2.0 has issues compiling modules on 64-bit |
| 316 | checkbin: |
| 317 | @if test "$(call cc-version)" = "0304" ; then \ |
| 318 | if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \ |
| 319 | echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \ |
| 320 | echo 'correctly with gcc-3.4 and your version of binutils.'; \ |
| 321 | echo '*** Please upgrade your binutils or downgrade your gcc'; \ |
| 322 | false; \ |
| 323 | fi ; \ |
| 324 | fi |
| 325 | @if test "$(call cc-version)" -lt "0400" \ |
| 326 | && test "x${CONFIG_PPC64}" = "xy" ; then \ |
| 327 | echo -n "Sorry, GCC v4.0 or above is required to build " ; \ |
| 328 | echo "the 64-bit powerpc kernel." ; \ |
| 329 | false ; \ |
| 330 | fi |
| 331 | @if test "$(call cc-fullversion)" = "040200" \ |
| 332 | && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \ |
| 333 | echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \ |
| 334 | echo 'kernel with modules enabled.' ; \ |
| 335 | echo -n '*** Please use a different GCC version or ' ; \ |
| 336 | echo 'disable kernel modules' ; \ |
| 337 | false ; \ |
| 338 | fi |
| 339 | |
| 340 | CLEAN_FILES += $(TOUT) |
| 341 | |